99768660 has 48 divisors (see below), whose sum is σ = 281573376. Its totient is φ = 26393472.

The previous prime is 99768649. The next prime is 99768661. The reversal of 99768660 is 6686799.

It is a happy number.

It is a super-3 number, since 3×99768660³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99768661) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1074 + ... + 14166.

It is an arithmetic number, because the mean of its divisors is an integer number (5866112).

Almost surely, 2^99768660 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 99768660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (140786688).

99768660 is an abundant number, since it is smaller than the sum of its proper divisors (181804716).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

99768660 is a wasteful number, since it uses less digits than its factorization.

99768660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13232 (or 13230 counting only the distinct ones).

The product of its (nonzero) digits is 979776, while the sum is 51.

The square root of 99768660 is about 9988.4263024763. The cubic root of 99768660 is about 463.8006786086.

The spelling of 99768660 in words is "ninety-nine million, seven hundred sixty-eight thousand, six hundred sixty".